I am trying to enclose two DIV elements, inner-1 & inner-2, (dotted red border) inside a wrapper DIV (solid green border) but the wrapper DIV element does not expand to enclose the inner DIVs.
What am I doing wrong?
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title> Nested divs </title>
</head>
<body>
<div id="wrapper" style="margin-left:auto; margin-right:auto; border:solid #669933;">
content inside "wrapper" div
<div id="inner-1" style="float:left; width:49%; border:dotted #CC3300;">
content <br />
inside <br />
inner-1 div
</div>
<div id="inner-2" style="float:left; width:49%; border:dotted #CC3300;">
content inside inner-2 div
</div>
</div>
</body>
</html>